1(2): 左下角一箭穿心，sqrt(5)+1, 2(1): 1/3圓（半徑=2）+ 2*（1/6圓的弓形）

來源: 萬斤油於 2023-03-26 21:16:19 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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